Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902418 | Element having a porous wall | — | 1990-02-20 |
| 4900440 | Dynamic pressure filter | Jan R. de Fries | 1990-02-13 |
| 4704363 | Fermentation system | — | 1987-11-03 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902418 | Element having a porous wall | — | 1990-02-20 |
| 4900440 | Dynamic pressure filter | Jan R. de Fries | 1990-02-13 |
| 4704363 | Fermentation system | — | 1987-11-03 |